Controlling device



Patented June 2, 1931 UNITED STATES PATENT oFFICE Hcatin 1ed a 26, 1926. seTial No. 111,863.

- Cation Sofiol No. 5,126, 1lectfioal oontfol- 1ing device, filed ffafoh 16, 1922.

In the above nlentioned )Tior inventions I hove Seoured the desirod Cont1 o1 fron1 the dosh ot ordinorily attached to oofoInatio SCaleS to oheck tlle fTeedo n of theif oSoiHa tionS ond brin theIn quiokly to a poSition of equilibri111n. n order to ool1Se Suoh o daSh ot to look InechaniSIn conneoted to the Soole until the Soale coIneS to o oSition of equilib- 1'iI11I1 and the daSh pot iSton, vvhich iS at taohed to a n10ving )aft of the Soale, oonleS to fest, I have rovided, in the prior inventionS l11entioned, o Seoondory oylindeT oonneoted to the (lavSh pot oylinder by tvvo ortS, one above ond olle beloW the piSton. ThiS Second ory cylinder ootS like a preSSufe gage and its piSton, nd a lever attaohed t-fleI'eto, ofo diS- placed fron1 nofInol oSifion dofing 1T1ove Inent of the riIIlary daSh pot iSton, (111o to the fact that n1oveInent of the riInary )iSton CuSeS o diffefence of reSSnTe obove ond be low it Which is InonifeSted by the tendenoy for the nid to HOW aWoy fron1 the Side to ofd Tvhich the piSton iS IIloving. This lever, oftached to the Secondfy )iSton, vVhich iS thuS in itS norolal oSition only vhile the Soo]e IneohoniSm iS of reSt, i. e. in o OSition of eq11ilibfit11T1, iS So offanged aS to look tho ttched IneohaniSfn vvhen it iS oot of itS nor- 1T1al oSition dUe to 111ovenlent of the pfiInory 1)iston and the SCale to vhich it iS attached, Hd ith hiCh itn10veS.

x1thoUgh theSe deviceS fUnotion erfeofly the lnannfaoture of a daSh pot ith tvo Cyl inders oonnected by portS So ConStrnCted aS to be ffee ffon1 danger of 1eaka e vhon Snb ieofed to the StrainS vvflioh SonletiIneS ooonf dne to Ship ing ond handling snch deviceS,

a.nd be ffee fron1 ofho' dofeCtS 111(1 obioCtionable fea.tl11'eS, iS a So111e*hof difHonlt and ex I)enSive )I'oCeSS. It is alS() found tl11 t the fact that the ofts lnHSt be relotively large and 111oSt be loCated x oll obOVo and belo the l oxtfelnitieS of 111oveinellf of the )iSton lnokeS it neCeSSafy to ConStroCf o daSh )ot oonSidof ably longer than X olI1d ofhofXViSo be neoeS Sfy of deSifable.

The )ri nTe oboCt of the preSen inVontion iS therefore t 1o Sin1plifioation of tho St1'Ho tufo, and redHofion of the difCH1ty nnd coSf of ]TloI1tlfactHfe, by elin1inati11g the neCeS 4 Sity for the ddition of SeCondof Cylindel' to fhe 11SUal fofn of daSh pot, ithot losing any of the advontogeS of tho eaflio1' StfnctoreS 1fefefence fo the obove 111entioned patent and Co-pending app]iCotion X ill Shoxv thot the afe deSigned So thot o 111oVelnent of tlle P Soale SoInevhat leSS than the degfoe of lnoti011 neoeSSofy to effect a. C 11onge in fho reod ing, in the S11olleSt tII1itS adpted to be, detef- 1T1iI1ed by the partiCHlar Scale, iS SIIffioient to ooUSe an effective diSplocel11ent of the locking fnember at the onCl of fho leve1' attoChed t0 the SeCondafy I)iStoIL A S111olle1 dogroe of 111ove111ent of tho SoLlo iS of 110 conSeqnence and 11oy therefore be oonSidered eqHilibfiUln. ThuS the te1'InS Dotion ond eqUilibriUln of the soale aS uSed throngl1ont theSe S eCiCotionS ond olaiInS ofe fo be UnderStood aS lneaTIing tho degree of lnovel11ent above deSC Tibod, oI' the laok of that degree of 11o en1ent. In

ScaleS as thev are lfSUL1l 7 bUi1 thiS de fee of InoveInent of the Sole CoffeSpondS to Hn extrenlely SmaH 111ove111ent of the doSh pot )iS ton. In Iny )rio1 inventionS thiS extTe1ely Sn1all InoveInent of the daSh )ot PiSfon iS 

